Roller-bearing.



No. saan. Patented nee. I7, l190|. F. scHoETER. AMILLER BEARING.

(Application lad Feb. 1, 1899.) (No Model.)

@vxe?) \Y x., /04 C 3 VUNITED STATES PATENT @Trina JOI-IAN FREDERIK SCHROETER, OF COPENHAGEN, DENMARK.

ROLLER-BEARING.

SPECIFICATION forming part of Letters Patent No. 688,971, dated December 17, 1901. Application filed February 4, 1899. Serial No. 704,558. (No model.)

To LZZ whom, it may concern/f Be it known that I, JOHAN FREDERIK SCHROETER, residing at Copenhagen, in the Kingdom of Denmark, have invented certain new and useful Improvements in Roller-Bearings; and I do hereby declare the following to be a full, clear, and exact description ot' the invention, such as will enable others skilled in the art to which itappertains to make and use the same.

The idea of supporting of shafts against sheave-like bodies the axles ot' which rotate in stationary bearings or can travel on two tracks ha-s been embodied in various arrangements or constructions, and these,among others, fill the purpose of diminishing the friction of the shafts. Although this purpose seems to be attained in part, there is stili left considerable friction in the bearings of these supports and simultaneous vibration in their axles in the known arrangements, so that in reality no great reduction of friction is obtained.

By the bearing forming the subject-matter of this invention the friction between all bearing parts andthe vibrations are made extremely slight.

In the drawings, Figure l is a sectional View of one form of the invention. Fig. 2 is a plan View of' Fig. l, and Fig. 3 is a view similar to Fig. 1 of a modification.

As shown in the drawings,a rigid or springy cone or a flanged ring is arranged through which the shaft passes and finds bearings and which hangs on the upper circumference of anumber of-fornstance, three-sheave-like bodies a', c2, and a3, which are set on axles f, which are held in the bearings h in a connect ing-piece t', which may be, forinstance, fun-v nel-shaped. The sheave-like bodies rest on a single annular track d on the uppermost portions of a stationary frame e' and can roll on the same. By this the effect is obtained that the pressure of the axle b/ and the ring c is transmitted quite directly onto the circular track d by means of the sheave-like bodies c, a2, and a3, and the axles f of these sheavelike bodies are not weighted, as they only need to keep the sheave-like bodies in correct position and carry nothing but the light joint-piece 'i'. On this account the axles f may be very thin, and consequently only an extremely slight friction is produced by their proportionately slow revolution.

As the shaft b' is centered with the ring c' by means of the sheave-like bodies a', d'2, and a3 and hung on same, it becomes unnecessary that it's lowest extremity should be arranged as a step-bearing. It is sufficient if the shaft is centered in a small centeringbearing-for instance, as shown at o'. By this arrangement the loss of power, heating, duc., caused in all rapid-running shafts both in upper neck-bearing and in step-bearings by the considerable friction is avoided.

Then the shaftl b is made toy revolve rapidly, it will make the sheave-like bodies a', a2, and a3 revolve proportionately slower by means of the ring c', and these she-ave-like bodies will run on the circular track d without perceptible pressure or vibration of the axles .f and without any friction in the bear? ings h or in the centering-bearing o' that would be worth y of consideration, as the shaft b is carried by the sheave-'like bodies a',c2,and a3, as mentioned before. Astill slower revolution with still decreased friction in these bearings h can be obtained if the sheave-like bodies or plates are arranged as double sheave -like bodies, but preferably in the manner that the pressure is effected directly through these double sheave-like bodies without any oblique pressures. This can be obtained in the manner shown at a" and a5, Fig. 3, where the sheave-like bodies have, for instance, a boss orhub at the lower side, which can revolve on the circular trackZ of the uppermost portions of the frame e2. The shaft b2, which is hung on the sheave-like bodies by means of the cone c2', can thus execute a greater number of revolutions to every revolution of the axlesf and the funnel 2 with a hollow axle i3.

As shown in Fig. 3, the funnel-shaped counecting-piece i2 can be extended downwardly by the hollow axle i3, this piece being centered below in the bearing o2 and being provided with a centering-bearing t4 around the lowest extremity of the axle b2. This allows that the rotation can be transmitted simultaneously by means of these bearings.

If, for instance, the hollow axle i3 is set into rotation, the sheave-like bodies will travel on the circular track, and thereby increase the speed of rotation of the cone c2 and the shaft b2 by many times. On the contrary, the arrangement of a fast-running motor on top of the shaft b2 will bring abouta many-times decreased speed of rotation by means of the hollow axle e3, every effect being obtained Without any loss of power by friction worth mentioning and in a similar manner.

. As the shaft b or b2 does not run in neck bearings or collars, a springy ring or cone of some elastic materialwrubber, for instancecan be arranged directly around the shaft, whereby shocks or vibrations are obviated in a considerably more perfect manner than hitherto, because formerly it was necessary to adapt the elastic packing on the outside around the collars.. v Such an elastic packing is shown in Fig. 3 at q, where as a matter of example the layer q is arranged between the shaft b2 and the cone c2. i

The sheave-like bodies may be constituted of a single sheave, as in Fig. 1, or the double sheave, as in Fig. 3.

I claim as my invention.-

l. In combination inY means for journaling shafts, the sheave-like bodies, a track on the shaft engaged by said sheave-like bodies, an annular track on which lhesheave-like bodies bear and roll While rotating about their axial lines, the axles of the sheave-like bodies and means for holding or controlling the position of the said axles, said axles being free from strain and serving only to guide the sheavelike bodies in their action,` the said sheavci like bodies bearing all the strain between the I shaft and the track,substantially asdescribed.

2. In combination in meansfor journaling 1 shafts, fthe sheave-like bodies, a yielding track on the shaft engaged by said sheavelike bodies, an annular track on which the sheave-like bodies bear and roll while rotating about their axial lines, the axles of the sheave-like bodies and means for holding or controlling the position of the said axles said axles being free from strain and serving only to guide the sheave-like bodies in their action, the said sheave-like bodies bearing all the strain between the shaft and the track, substantially as described.

3. In combination in means for journaling shafts, the sheave-like bodies, a track on the shaft engaged bythe said sheave-like bodies, an annular track on which the sheave-like bodies bear and roll while rotating about their axial lines, the axles of the sheave-l-ike bodies, means for holding or controlling the position of said axles, said axles being free from strain and serving only to guide the sheave-like bodies in their action, the said sheave-like bodies bearing all the strain between the shaft and the track, a hollow shaft connected with the means for controlling the axles of the sheave-like bodies, the arrangement being such that the sheave-like bodies may serve to transmit the rotary movement between the .two shafts mentioned, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JOHAN FREDERIK SCHROETER.

Witnesses:

THEoDoR I-IoLINs, JULES BLOM. 

